<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <style>
    .all{
      background-color: #f5f5f5;
      height:500px;
      width: 1004px
    }

    .borderBlack{
      height:140px;
      width:480px;
      border:1px solid #000000;
      margin:10px;
      float:left
    }
  </style>
</head>
<body>
  <div class="all">
    <div class="borderBlack">
      <div style="width:140px;height:120px;float:left;background-color:#62a9fb;margin:10px"></div>
      <div style="width:140px;height:120px;float:left;background-color:#ffb266;margin:10px"></div>
      <div style="width:140px;height:120px;float:left;background-color:#68eae6;margin:10px"></div>
    </div>
    <div class="borderBlack">
      <div style="width:140px;height:120px;float:left;background-color:#62a9fb;margin:10px"></div>
      <div style="width:140px;height:120px;float:left;background-color:#ffb266;margin:10px"></div>
      <div style="width:140px;height:120px;float:left;background-color:#68eae6;margin:10px"></div>
    </div>
    <div class="borderBlack">
      <div style="width:140px;height:120px;float:left;background-color:#62a9fb;margin:10px"></div>
      <div style="width:140px;height:120px;float:left;background-color:#ffb266;margin:10px"></div>
      <div style="width:140px;height:120px;float:left;background-color:#68eae6;margin:10px"></div>
    </div>
  </div>
</body>
</html>
